Twitter’s Location Policy — If you chose to tweet with a place, but not to share your exact coordinates, Twitter still needs to use your coordinates to determine your Place. In order to improve the accuracy of our geolocation systems (for example, the way we define neighborhoods and places), Twitter will temporarily store those coordinates for 6 months. Because how could anything go wrong if there’s a database containing 6 months of my precise locations stored on the Internet even when I’ve chosen not to share my precise location? (via straup on Delicious)